(Anti)neutrinos in the Standard Model (SM) do not have mass. As it is well-known, a massless, chiral neutrino cannot have a nonzero magnetic (and electric) dipole moment. However, beyond the SM, a massive Dirac or Majorana neutrino will, in general, exhibit magnetic moment [1]}. Therefore, the geoneutrino feels magnetic fields. Low [2]} [3]} has studied the interaction between particles through non-minimal couplings, opening up the possibility of understanding another kind of interaction, in this case, the spin of the neutrino with magnetic fields.
